Pug parent here. As many other comments have mentioned, brachycephalic dogs are only one kind that suffers largely as a result of selective breeding by humans. I have the (somewhat) unfortunate opinion that brachycephalic dogs are also by far the cutest. Nothing makes me happier than being with my pug. I think this particular article brings up two important things about dogs as pets, but fails to connect them properl…
Well, we invented dogs. So while it is a good morale argument that breeding co-dependency into a species and infantilizing an otherwise very self-sufficient predator is a bad thing, its probably not going to happen. At least not in our lifetime. Which brings us back to improving the standards for breeding that we have today. Some dogs, such as Dalmatians and Bulldogs, are genetic atrocities and should not be bred in…
But I do know why people buy bulldogs. They're easygoing. They have high medical and upkeep maintenance costs, but very low day-to-day costs. They're suitable for families with small children or other pets. They're grateful for play time when it's available, but not harmed by prolonged inattention. They're not so big that you couldn't own one in an apartment.
If there's another, healthier breed with the same characteristics and no major health problems, I'll concede that people should buy that breed and not the bulldog. But I don't think that's the case.
Stipulating that you can only get that package of attributes in a health-compromised breed, I don't think you have a very strong argument. If you need those attributes in a pet, your alternative to a compromised dog is no dog at all. While I wouldn't go so far as to claim that bringing a genetically compromised dog into the world is an ethical positive, I can't find a way to it being ethically negative. It seems pretty neutral to me.
Obviously: to responsibly acquire one of these dogs, you need to be educated about their issues and committed to ensuring their comfort as best as can be done.